膏体充填尾矿浓密规律初探

A Primary Discussion on the Thickening Law of Paste-filling

深锥浓密机是20世纪70年代发展起来的一种高效浓缩设备,具有极大的生产能力,可获得较高的底流浓度,为膏体充填料的制备提供了保障。简要介绍了某矿深锥浓密机的结构及工作原理,并通过现场实际观察将浓密过程中的矿浆在竖直方向上划分为澄清区、沉降区、临界浓度区以及压缩区4区域。分别对各区域浓度变化规律及主要影响因素进行了试验研究,得到固体颗粒在锥体内的3浓密阶段,并估算了正常负荷下底流浓度的变化范围：76%-82%,为现场系统故障预测与排除提供了理论依据。

Deep-cone thickener as a high-effective thickening equipment was developed in 1970s,which owns a great production capacity and can get a higher underflow density. It provides guarantee for the preparation of paste filling materials. In this paper, the structure and operating principle of a deep-cone thickener are described. The thickening processes are divided into： clarification area, sedimentation area, critical concentration area, and compression area by on-field observation. The laws of concentration changing and the major influencing factors by experiments are studied respectively. The results indicate that the sedimentation of tailings has three steps and the 76% - 82% change range of underflow density in normal operating was obtained, providing a theoretical basis for prediction and control of system fault.